Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1987-03-09
1988-10-11
Kittle, John E.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428131, 428137, 428209, 428901, 427 431, 427 541, 427305, 174 685, B32B 300, B05D 306, H01K 500
Patent
active
047770783
ABSTRACT:
A process of forming on a substrate a copper coating which has excellent mechanical properties, comprising depositing copper on the substrate by chemical plating, and forming at least one silver-rich layer during the deposition of copper, each silver-rich layer has a higher content of silver than the other portion of the copper coating. Also disclosed is a process of producing a printed-wiring board by forming such a copper coating.
REFERENCES:
patent: 4082557 (1978-04-01), Pizzio
patent: 4568570 (1986-02-01), Giesecke
patent: 4666744 (1987-05-01), DeLuca et al.
Brother Kogyo Kabushiki Kaisha
Kittle John E.
Ryan P. J.
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